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-rw-r--r--gcc/testsuite/gcc.misc-tests/gcov-30.c869
1 files changed, 869 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.misc-tests/gcov-30.c b/gcc/testsuite/gcc.misc-tests/gcov-30.c
new file mode 100644
index 0000000..dbc1681
--- /dev/null
+++ b/gcc/testsuite/gcc.misc-tests/gcov-30.c
@@ -0,0 +1,869 @@
+/* { dg-options "--coverage -fpath-coverage -fprofile-update=atomic" } */
+/* { dg-do run { target native } } */
+
+void
+pathcov001a ()
+{
+ /* Empty functions should not be problematic. */
+}
+
+/* Straight line, which should have only one path. */
+/* BEGIN paths
+ summary: 1/1
+*/
+void
+pathcov001b ()
+/* END */
+{
+ int a = 0;
+ ++a;
+}
+
+/* Same as b, but not executed. */
+/* BEGIN paths
+ summary: 0/1
+ expect: 33
+*/
+void
+pathcov001c ()
+/* END */
+{
+ int a = 0;
+ ++a;
+}
+
+/* 002 is a simple baseline test, with no complicated control flow and no
+ loops, run with different combinations of inputs that tests the paths in
+ isolation. */
+/* BEGIN paths
+ summary: 0/2
+ expect: 48(true) 49 52
+ expect: 48(false) 51 52
+*/
+void
+pathcov002a (int a)
+/* END */
+{
+ int v = 0;
+ if (a)
+ v++;
+ else
+ v--;
+}
+
+/* BEGIN paths
+ summary: 1/2
+ expect: 63(false) 66 67
+*/
+void
+pathcov002c (int a)
+/* END */
+{
+ int v = 0;
+ if (a)
+ v++;
+ else
+ v--;
+}
+
+/* BEGIN paths
+ summary: 1/2
+ expect: 78(true) 79 82
+*/
+void
+pathcov002b (int a)
+/* END */
+{
+ int v = 0;
+ if (a)
+ v++;
+ else
+ v--;
+}
+
+/* Identical to 002*, but run for both inputs. This should achieve full
+ coverage.
+
+ BEGIN paths
+ summary: 2/2
+*/
+void
+pathcov002d (int a)
+/* END */
+{
+ int v = 0;
+ if (a)
+ v++;
+ else
+ v--;
+}
+
+/* Test individual control flow structures in isolation. */
+
+/* BEGIN paths
+ summary: 0/2
+ expect: 112(true) 113 114
+ expect: 112(false) 114
+*/
+void
+pathcov003a (int a)
+/* END */
+{
+ if (a)
+ a++;
+}
+
+/* BEGIN paths
+ summary: 0/2
+ expect: 125(true) 126 129
+ expect: 125(false) 128 129
+*/
+void
+pathcov003b (int a)
+/* END */
+{
+ if (a)
+ a++;
+ else
+ a--;
+}
+
+/* BEGIN paths
+ summary: 0/3
+ expect: 141(true) 142 147
+ expect: 141(false) 143(true) 144 147
+ expect: 141(false) 143(false) 146 147
+*/
+void
+pathcov003c (int a)
+/* END */
+{
+ if (a > 10)
+ a++;
+ else if (a > 20)
+ a--;
+ else
+ a += 2;
+}
+
+/* BEGIN paths
+ summary: 0/5
+ expect: 162 162(true) 163
+ expect: 162 162(false) 164
+ expect: 163 162(true) 163
+ expect: 163 162(false) 164
+ expect: 162(true) 163 162
+*/
+void
+pathcov003d (int a)
+/* END */
+{
+ int x = 0;
+ for (int i = 0; i < a; ++i)
+ ++x;
+}
+
+/* BEGIN paths
+ summary: 0/5
+ expect: 180 180(true) 181
+ expect: 180 180(false) 182
+ expect: 181 180(true) 181
+ expect: 181 180(false) 182
+ expect: 180(true) 181 180
+*/
+void
+pathcov003e (int a)
+/* END */
+{
+ int x = 0;
+ int i = 0;
+ while (i++ < a)
+ x++;
+}
+
+/* BEGIN paths
+ summary: 0/2
+ expect: 194 197(false) 198
+ expect: 197(true) 197
+*/
+void
+pathcov003f (int a)
+/* END */
+{
+ int x = 0;
+ int i = 0;
+ do {
+ x++;
+ } while (i++ < a);
+}
+
+/* BEGIN paths
+ summary: 0/5
+ expect: 213 216(true) 220
+ expect: 213 216(false) 222
+ expect: 216(true) 220 216
+ expect: 220 216(true) 220
+ expect: 220 216(false) 222
+*/
+void
+pathcov003g (int a)
+/* END */
+{
+ int i = 0;
+ int x = 0;
+
+top:
+ if (i < a)
+ {
+ x++;
+ i++;
+ goto top;
+ }
+}
+
+/* This example has a good mix of control flow structures which makes it nice
+ at identifying problems with the bookeeping/instrumentation. */
+
+/* BEGIN paths
+ summary: 0/9
+ expect: 243(false) 247 247(true) 247(true) 249(true) 250 253
+ expect: 243(false) 247 247(true) 247(false) 253
+ expect: 243(false) 247 247(false) 253
+ expect: 243(true) 253
+ expect: 249(false) 247(true) 247(true) 249
+ expect: 249(false) 247(true) 247(false) 253
+ expect: 247(true) 247(true) 249(false) 247
+ expect: 247(true) 249(false) 247(true) 247
+ expect: 247(true) 249(false) 247(false) 253
+*/
+void
+pathcov004a (int a, int b, int c, int d)
+/* END */
+{
+ if (a)
+ {}
+ else
+ {
+ while (b-- > 0 && c-- > 0)
+ {
+ if (d)
+ break;
+ }
+ }
+}
+
+/* BEGIN paths
+ args: (1, 0, 0, 0)
+ summary: 1/9 */
+void
+pathcov004b (int a, int b, int c, int d)
+/* END */
+{
+ if (a)
+ {}
+ else
+ {
+ while (b-- > 0 && c-- > 0)
+ {
+ if (d)
+ break;
+ }
+ }
+}
+
+/* BEGIN paths
+ args: (0, 0, 0, 0)
+ summary: 1/9 */
+void
+pathcov004c (int a, int b, int c, int d)
+/* END */
+{
+ if (a)
+ {}
+ else
+ {
+ while (b-- > 0 && c-- > 0)
+ {
+ if (d)
+ break;
+ }
+ }
+}
+
+/* BEGIN paths
+ args: (0, 1, 0, 0)
+ summary: 1/9 */
+void
+pathcov004d (int a, int b, int c, int d)
+/* END */
+{
+ if (a)
+ {}
+ else
+ {
+ while (b-- > 0 && c-- > 0)
+ {
+ if (d)
+ break;
+ }
+ }
+}
+
+/* BEGIN paths
+ args: (0, 1, 1, 0)
+ summary: 2/9 */
+void
+pathcov004e (int a, int b, int c, int d)
+/* END */
+{
+ if (a)
+ {}
+ else
+ {
+ while (b-- > 0 && c-- > 0)
+ {
+ if (d)
+ break;
+ }
+ }
+}
+
+/* BEGIN paths
+ args: (0, 2, 1, 0)
+ summary: 3/9 */
+void
+pathcov004f (int a, int b, int c, int d)
+/* END */
+{
+ if (a)
+ {}
+ else
+ {
+ while (b-- > 0 && c-- > 0)
+ {
+ if (d)
+ break;
+ }
+ }
+}
+
+/* Funny loop exits. */
+
+/* BEGIN paths
+ summary: 0/14
+*/
+void
+pathcov005a (int a, int b, int c)
+/* END */
+{
+ while (a)
+ {
+ if (b)
+ return;
+ while (c--)
+ a++;
+ }
+}
+
+void
+pathcov005b (int a, int b, int c)
+/* END */
+{
+ if (a)
+ goto loop;
+
+ while (b > 0)
+ {
+ b--;
+loop:
+ while (c--)
+ a++;
+ }
+}
+
+void
+pathcov005c (int a, int b, int c)
+/* END */
+{
+ while (a-- > 0) c++;
+ while (b-- > 0) c++;
+}
+
+/* BEGIN paths
+ summary: 0/67
+
+ This is a sanity check and baseline and should not be executed.
+
+ With >64 cases we should have >64 paths which guarantees we cannot fit the
+ full bitset within a in a single gcov type. We want to only update the
+ relevant counters because extra instructions are expensive in compile time
+ and binary bloat, and verify that only taken paths are recorded. */
+void
+pathcov006a (int a)
+/* END */
+{
+ int x = 0;
+ switch (a)
+ {
+ case 0: x++; break;
+ case 1: x++; break;
+ case 2: x++; break;
+ case 3: x++; break;
+ case 4: x++; break;
+ case 5: x++; break;
+ case 6: x++; break;
+ case 7: x++; break;
+ case 8: x++; break;
+ case 9: x++; break;
+ case 10: x++; break;
+ case 11: x++; break;
+ case 12: x++; break;
+ case 13: x++; break;
+ case 14: x++; break;
+ case 15: x++; break;
+ case 16: x++; break;
+ case 17: x++; break;
+ case 18: x++; break;
+ case 19: x++; break;
+ case 20: x++; break;
+ case 21: x++; break;
+ case 22: x++; break;
+ case 23: x++; break;
+ case 24: x++; break;
+ case 25: x++; break;
+ case 26: x++; break;
+ case 27: x++; break;
+ case 28: x++; break;
+ case 29: x++; break;
+ case 30: x++; break;
+ case 31: x++; break;
+ case 32: x++; break;
+ case 33: x++; break;
+ case 34: x++; break;
+ case 35: x++; break;
+ case 36: x++; break;
+ case 37: x++; break;
+ case 38: x++; break;
+ case 39: x++; break;
+ case 40: x++; break;
+ case 41: x++; break;
+ case 42: x++; break;
+ case 43: x++; break;
+ case 44: x++; break;
+ case 45: x++; break;
+ case 46: x++; break;
+ case 47: x++; break;
+ case 48: x++; break;
+ case 49: x++; break;
+ case 50: x++; break;
+ case 51: x++; break;
+ case 52: x++; break;
+ case 53: x++; break;
+ case 54: x++; break;
+ case 55: x++; break;
+ case 56: x++; break;
+ case 57: x++; break;
+ case 58: x++; break;
+ case 59: x++; break;
+ case 60: x++; break;
+ case 61: x++; break;
+ case 62: x++; break;
+ case 63: x++; break;
+ case 64: x++; break;
+ case 65: x++; break;
+ }
+}
+
+/* BEGIN paths
+ args: (0)
+ summary: 1/67
+*/
+void
+pathcov006b (int a)
+/* END */
+{
+ int x = 0;
+ switch (a)
+ {
+ case 0: x++; break;
+ case 1: x++; break;
+ case 2: x++; break;
+ case 3: x++; break;
+ case 4: x++; break;
+ case 5: x++; break;
+ case 6: x++; break;
+ case 7: x++; break;
+ case 8: x++; break;
+ case 9: x++; break;
+ case 10: x++; break;
+ case 11: x++; break;
+ case 12: x++; break;
+ case 13: x++; break;
+ case 14: x++; break;
+ case 15: x++; break;
+ case 16: x++; break;
+ case 17: x++; break;
+ case 18: x++; break;
+ case 19: x++; break;
+ case 20: x++; break;
+ case 21: x++; break;
+ case 22: x++; break;
+ case 23: x++; break;
+ case 24: x++; break;
+ case 25: x++; break;
+ case 26: x++; break;
+ case 27: x++; break;
+ case 28: x++; break;
+ case 29: x++; break;
+ case 30: x++; break;
+ case 31: x++; break;
+ case 32: x++; break;
+ case 33: x++; break;
+ case 34: x++; break;
+ case 35: x++; break;
+ case 36: x++; break;
+ case 37: x++; break;
+ case 38: x++; break;
+ case 39: x++; break;
+ case 40: x++; break;
+ case 41: x++; break;
+ case 42: x++; break;
+ case 43: x++; break;
+ case 44: x++; break;
+ case 45: x++; break;
+ case 46: x++; break;
+ case 47: x++; break;
+ case 48: x++; break;
+ case 49: x++; break;
+ case 50: x++; break;
+ case 51: x++; break;
+ case 52: x++; break;
+ case 53: x++; break;
+ case 54: x++; break;
+ case 55: x++; break;
+ case 56: x++; break;
+ case 57: x++; break;
+ case 58: x++; break;
+ case 59: x++; break;
+ case 60: x++; break;
+ case 61: x++; break;
+ case 62: x++; break;
+ case 63: x++; break;
+ case 64: x++; break;
+ case 65: x++; break;
+ }
+}
+
+/* BEGIN paths
+ args: (64)
+ summary: 1/67 */
+void
+pathcov006c (int a)
+/* END */
+{
+ int x = 0;
+ switch (a)
+ {
+ case 0: x++; break;
+ case 1: x++; break;
+ case 2: x++; break;
+ case 3: x++; break;
+ case 4: x++; break;
+ case 5: x++; break;
+ case 6: x++; break;
+ case 7: x++; break;
+ case 8: x++; break;
+ case 9: x++; break;
+ case 10: x++; break;
+ case 11: x++; break;
+ case 12: x++; break;
+ case 13: x++; break;
+ case 14: x++; break;
+ case 15: x++; break;
+ case 16: x++; break;
+ case 17: x++; break;
+ case 18: x++; break;
+ case 19: x++; break;
+ case 20: x++; break;
+ case 21: x++; break;
+ case 22: x++; break;
+ case 23: x++; break;
+ case 24: x++; break;
+ case 25: x++; break;
+ case 26: x++; break;
+ case 27: x++; break;
+ case 28: x++; break;
+ case 29: x++; break;
+ case 30: x++; break;
+ case 31: x++; break;
+ case 32: x++; break;
+ case 33: x++; break;
+ case 34: x++; break;
+ case 35: x++; break;
+ case 36: x++; break;
+ case 37: x++; break;
+ case 38: x++; break;
+ case 39: x++; break;
+ case 40: x++; break;
+ case 41: x++; break;
+ case 42: x++; break;
+ case 43: x++; break;
+ case 44: x++; break;
+ case 45: x++; break;
+ case 46: x++; break;
+ case 47: x++; break;
+ case 48: x++; break;
+ case 49: x++; break;
+ case 50: x++; break;
+ case 51: x++; break;
+ case 52: x++; break;
+ case 53: x++; break;
+ case 54: x++; break;
+ case 55: x++; break;
+ case 56: x++; break;
+ case 57: x++; break;
+ case 58: x++; break;
+ case 59: x++; break;
+ case 60: x++; break;
+ case 61: x++; break;
+ case 62: x++; break;
+ case 63: x++; break;
+ case 64: x++; break;
+ case 65: x++; break;
+ }
+}
+
+/* BEGIN paths
+ args: (2, 65)
+ summary: 2/67
+
+ In this case we should record a path in both halves of the accumulator
+ bitsets. Note that the paths don't overlap with the single-half examples in
+ 006b and 006c to reduce the chance of accidental passes. */
+void
+pathcov006d (int a)
+/* END */
+{
+ int x = 0;
+ switch (a)
+ {
+ case 0: x++; break;
+ case 1: x++; break;
+ case 2: x++; break;
+ case 3: x++; break;
+ case 4: x++; break;
+ case 5: x++; break;
+ case 6: x++; break;
+ case 7: x++; break;
+ case 8: x++; break;
+ case 9: x++; break;
+ case 10: x++; break;
+ case 11: x++; break;
+ case 12: x++; break;
+ case 13: x++; break;
+ case 14: x++; break;
+ case 15: x++; break;
+ case 16: x++; break;
+ case 17: x++; break;
+ case 18: x++; break;
+ case 19: x++; break;
+ case 20: x++; break;
+ case 21: x++; break;
+ case 22: x++; break;
+ case 23: x++; break;
+ case 24: x++; break;
+ case 25: x++; break;
+ case 26: x++; break;
+ case 27: x++; break;
+ case 28: x++; break;
+ case 29: x++; break;
+ case 30: x++; break;
+ case 31: x++; break;
+ case 32: x++; break;
+ case 33: x++; break;
+ case 34: x++; break;
+ case 35: x++; break;
+ case 36: x++; break;
+ case 37: x++; break;
+ case 38: x++; break;
+ case 39: x++; break;
+ case 40: x++; break;
+ case 41: x++; break;
+ case 42: x++; break;
+ case 43: x++; break;
+ case 44: x++; break;
+ case 45: x++; break;
+ case 46: x++; break;
+ case 47: x++; break;
+ case 48: x++; break;
+ case 49: x++; break;
+ case 50: x++; break;
+ case 51: x++; break;
+ case 52: x++; break;
+ case 53: x++; break;
+ case 54: x++; break;
+ case 55: x++; break;
+ case 56: x++; break;
+ case 57: x++; break;
+ case 58: x++; break;
+ case 59: x++; break;
+ case 60: x++; break;
+ case 61: x++; break;
+ case 62: x++; break;
+ case 63: x++; break;
+ case 64: x++; break;
+ case 65: x++; break;
+ }
+}
+
+/* BEGIN paths
+ args: (66)
+ summary: 1/67
+
+ This case should hit the empty default. */
+void
+pathcov006e (int a)
+/* END */
+{
+ int x = 0;
+ switch (a)
+ {
+ case 0: x++; break;
+ case 1: x++; break;
+ case 2: x++; break;
+ case 3: x++; break;
+ case 4: x++; break;
+ case 5: x++; break;
+ case 6: x++; break;
+ case 7: x++; break;
+ case 8: x++; break;
+ case 9: x++; break;
+ case 10: x++; break;
+ case 11: x++; break;
+ case 12: x++; break;
+ case 13: x++; break;
+ case 14: x++; break;
+ case 15: x++; break;
+ case 16: x++; break;
+ case 17: x++; break;
+ case 18: x++; break;
+ case 19: x++; break;
+ case 20: x++; break;
+ case 21: x++; break;
+ case 22: x++; break;
+ case 23: x++; break;
+ case 24: x++; break;
+ case 25: x++; break;
+ case 26: x++; break;
+ case 27: x++; break;
+ case 28: x++; break;
+ case 29: x++; break;
+ case 30: x++; break;
+ case 31: x++; break;
+ case 32: x++; break;
+ case 33: x++; break;
+ case 34: x++; break;
+ case 35: x++; break;
+ case 36: x++; break;
+ case 37: x++; break;
+ case 38: x++; break;
+ case 39: x++; break;
+ case 40: x++; break;
+ case 41: x++; break;
+ case 42: x++; break;
+ case 43: x++; break;
+ case 44: x++; break;
+ case 45: x++; break;
+ case 46: x++; break;
+ case 47: x++; break;
+ case 48: x++; break;
+ case 49: x++; break;
+ case 50: x++; break;
+ case 51: x++; break;
+ case 52: x++; break;
+ case 53: x++; break;
+ case 54: x++; break;
+ case 55: x++; break;
+ case 56: x++; break;
+ case 57: x++; break;
+ case 58: x++; break;
+ case 59: x++; break;
+ case 60: x++; break;
+ case 61: x++; break;
+ case 62: x++; break;
+ case 63: x++; break;
+ case 64: x++; break;
+ case 65: x++; break;
+ default:
+ }
+}
+
+void *alloc (int) { return 0; }
+void *getcwd (void *, int) { return 0; }
+void release (void *) {}
+
+/* Based on gnu_getcwd from tree.c. This function crashed in early
+ development, and is mostly useful as a regression test.
+
+ BEGIN paths
+ summary: 0/8 */
+void *gnu_getcwd()
+/* END */
+{
+ int size = 100;
+ void *buffer = alloc (size);
+
+ while (1) {
+ void *value = getcwd (buffer, size);
+ if (value != 0) return buffer;
+ size *= 2;
+ release (buffer);
+ buffer = (void *) alloc (size);
+ }
+}
+
+/* BEGIN paths
+ summary: 0/5 */
+void pathcov007a (int a)
+/* END */
+{
+ goto mid;
+ while (1)
+ {
+ a--;
+ mid:
+ a--;
+ if (a < -5)
+ break;
+ a--;
+ }
+}
+
+int
+main ()
+{
+ pathcov001a ();
+ pathcov001b ();
+ /* not called: pathcov001c (); */
+
+ /* not called: pathcov002a (); */
+ pathcov002b (0);
+ pathcov002c (1);
+ pathcov002d (0);
+ pathcov002d (1);
+
+ pathcov004b (1, 0, 0, 0);
+ pathcov004c (0, 0, 0, 0);
+ pathcov004d (0, 1, 0, 0);
+ pathcov004e (0, 1, 1, 0);
+ pathcov004f (0, 2, 1, 0);
+
+ /* not called: pathcov006a (); */
+ pathcov006b (0);
+ pathcov006c (64);
+ pathcov006d (2);
+ pathcov006d (65);
+ pathcov006e (66);
+}
+
+/* { dg-final { run-gcov prime-paths { --prime-paths-lines gcov-30.c } } } */
generated by cgit v1.1 at 2025-04-04 13:28:20 +0000